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# src/utils/conversation_manager.py

"""
๋Œ€ํ™” ํžˆ์Šคํ† ๋ฆฌ ๊ด€๋ฆฌ์ž (๋ฉ”๋ชจ๋ฆฌ ๊ธฐ๋ฐ˜)

๊ธฐ๋Šฅ:
- UI ํ‘œ์‹œ์šฉ / ๋ถ„์„์šฉ ํžˆ์Šคํ† ๋ฆฌ ๋ถ„๋ฆฌ
- ์ „์ฒด ๋Œ€ํ™” ์ €์žฅ (greeting, thanks, document, out_of_scope)
- JSON ๋‚ด๋ณด๋‚ด๊ธฐ
- ํ†ต๊ณ„ ๊ธฐ๋Šฅ
"""

from datetime import datetime
from typing import List, Dict, Optional
import json
import logging

logger = logging.getLogger(__name__)


class ConversationManager:
    """
    ๋Œ€ํ™” ํžˆ์Šคํ† ๋ฆฌ ๊ด€๋ฆฌ (๋ฉ”๋ชจ๋ฆฌ ๊ธฐ๋ฐ˜)
    
    Streamlit session_state์™€ ํ•จ๊ป˜ ์‚ฌ์šฉ:
    - UI ํžˆ์Šคํ† ๋ฆฌ: Streamlit ๋ฉ”์‹œ์ง€ ํ˜•์‹
    - DB ํžˆ์Šคํ† ๋ฆฌ: ๋ถ„์„/์ €์žฅ์šฉ ํ˜•์‹
    """
    
    def __init__(self):
        """์ดˆ๊ธฐํ™”"""
        self.ui_history: List[Dict] = []   # Streamlit ํ‘œ์‹œ์šฉ
        self.db_history: List[Dict] = []   # ๋ถ„์„/์ €์žฅ์šฉ
        
        logger.info("๐Ÿ’ฌ ConversationManager ์ดˆ๊ธฐํ™” ์™„๋ฃŒ")
    
    def add_message(
        self,
        user_msg: str,
        ai_msg: str,
        query_type: str,
        sources: Optional[List] = None,
        usage: Optional[Dict] = None,
        search_mode: Optional[str] = None,
        used_retrieval: bool = False,
        routing_info: Optional[Dict] = None
    ):
        """
        ๋ฉ”์‹œ์ง€ ์ถ”๊ฐ€ (์ „์ฒด ์ €์žฅ)
        
        Args:
            user_msg: ์‚ฌ์šฉ์ž ์งˆ๋ฌธ
            ai_msg: AI ๋‹ต๋ณ€
            query_type: ์งˆ๋ฌธ ์œ ํ˜• (greeting/thanks/document/out_of_scope)
            sources: ์ฐธ๊ณ  ๋ฌธ์„œ ๋ฆฌ์ŠคํŠธ
            usage: ํ† ํฐ ์‚ฌ์šฉ๋Ÿ‰
            search_mode: ๊ฒ€์ƒ‰ ๋ชจ๋“œ
            used_retrieval: ๊ฒ€์ƒ‰ ์‚ฌ์šฉ ์—ฌ๋ถ€
            routing_info: ๋ผ์šฐํŒ… ์ •๋ณด
        """
        timestamp = datetime.now()
        
        # ===== UI ํžˆ์Šคํ† ๋ฆฌ (Streamlit ๋ฉ”์‹œ์ง€ ํ˜•์‹) =====
        # ์‚ฌ์šฉ์ž ๋ฉ”์‹œ์ง€
        self.ui_history.append({
            'role': 'user',
            'content': user_msg,
            'timestamp': timestamp
        })
        
        # AI ๋ฉ”์‹œ์ง€
        self.ui_history.append({
            'role': 'assistant',
            'content': ai_msg,
            'sources': sources or [],
            'usage': usage or {},
            'search_mode': search_mode,
            'used_retrieval': used_retrieval,
            'routing_info': routing_info,
            'type': query_type,  # ๋ถ„์„์šฉ ์ถ”๊ฐ€
            'timestamp': timestamp
        })
        
        # ===== DB ํžˆ์Šคํ† ๋ฆฌ (๋ถ„์„์šฉ) =====
        self.db_history.append({
            'user': user_msg,
            'assistant': ai_msg,
            'type': query_type,
            'timestamp': timestamp.isoformat(),
            'sources_count': len(sources) if sources else 0,
            'used_retrieval': used_retrieval,
            'search_mode': search_mode,
            'routing_info': routing_info
        })
        
        logger.info(f"๐Ÿ’พ ๋Œ€ํ™” ์ €์žฅ: {query_type} - {user_msg[:30]}...")
    
    def get_ui_history(self) -> List[Dict]:
        """
        UI ํ‘œ์‹œ์šฉ ํžˆ์Šคํ† ๋ฆฌ ๋ฐ˜ํ™˜ (Streamlit ํ˜•์‹)
        
        Returns:
            Streamlit ๋ฉ”์‹œ์ง€ ๋ฆฌ์ŠคํŠธ
        """
        return self.ui_history
    
    def get_db_history(self, last_n: Optional[int] = None) -> List[Dict]:
        """
        ๋ถ„์„/์ €์žฅ์šฉ ํžˆ์Šคํ† ๋ฆฌ ๋ฐ˜ํ™˜
        
        Args:
            last_n: ์ตœ๊ทผ N๊ฐœ๋งŒ ๋ฐ˜ํ™˜ (None์ด๋ฉด ์ „์ฒด)
        
        Returns:
            ๋Œ€ํ™” ๊ธฐ๋ก ๋ฆฌ์ŠคํŠธ
        """
        if last_n:
            return self.db_history[-last_n:]
        return self.db_history
    
    def get_history_by_type(self, query_type: str) -> List[Dict]:
        """
        ํŠน์ • ์งˆ๋ฌธ ์œ ํ˜•๋งŒ ํ•„ํ„ฐ๋ง
        
        Args:
            query_type: 'greeting', 'thanks', 'document', 'out_of_scope'
        
        Returns:
            ํ•„ํ„ฐ๋ง๋œ ๋Œ€ํ™” ๋ฆฌ์ŠคํŠธ
        """
        return [
            msg for msg in self.db_history 
            if msg['type'] == query_type
        ]
    
    def get_statistics(self) -> Dict[str, int]:
        """
        ์งˆ๋ฌธ ์œ ํ˜•๋ณ„ ํ†ต๊ณ„
        
        Returns:
            {'greeting': 5, 'document': 20, ...}
        """
        from collections import Counter
        
        types = [msg['type'] for msg in self.db_history]
        stats = dict(Counter(types))
        
        # ์ด ๋Œ€ํ™” ์ˆ˜ ์ถ”๊ฐ€
        stats['total'] = len(self.db_history)
        
        return stats
    
    def export_to_json(self) -> str:
        """
        JSON ํ˜•์‹์œผ๋กœ ๋‚ด๋ณด๋‚ด๊ธฐ
        
        Returns:
            JSON ๋ฌธ์ž์—ด
        """
        export_data = {
            'timestamp': datetime.now().isoformat(),
            'total_conversations': len(self.db_history),
            'statistics': self.get_statistics(),
            'conversations': self.db_history
        }
        
        return json.dumps(export_data, ensure_ascii=False, indent=2)
    
    def clear(self):
        """ํžˆ์Šคํ† ๋ฆฌ ์ดˆ๊ธฐํ™”"""
        self.ui_history = []
        self.db_history = []
        logger.info("๐Ÿ—‘๏ธ ๋Œ€ํ™” ํžˆ์Šคํ† ๋ฆฌ ์ดˆ๊ธฐํ™”")
    
    def __len__(self):
        """๋Œ€ํ™” ๊ฐœ์ˆ˜ (์‚ฌ์šฉ์ž ์งˆ๋ฌธ ๊ธฐ์ค€)"""
        return len(self.db_history)
    
    def __repr__(self):
        stats = self.get_statistics()
        return (
            f"ConversationManager("
            f"total={stats.get('total', 0)}, "
            f"document={stats.get('document', 0)}, "
            f"greeting={stats.get('greeting', 0)}, "
            f"thanks={stats.get('thanks', 0)}, "
            f"out_of_scope={stats.get('out_of_scope', 0)})"
        )


# ===== ํ…Œ์ŠคํŠธ ์ฝ”๋“œ =====
if __name__ == "__main__":
    # ํ…Œ์ŠคํŠธ
    manager = ConversationManager()
    
    # ๋Œ€ํ™” ์ถ”๊ฐ€
    manager.add_message(
        user_msg="์•ˆ๋…•ํ•˜์„ธ์š”",
        ai_msg="์•ˆ๋…•ํ•˜์„ธ์š”! ๋ฌด์—‡์„ ๋„์™€๋“œ๋ฆด๊นŒ์š”?",
        query_type="greeting"
    )
    
    manager.add_message(
        user_msg="์˜ˆ์‚ฐ์ด ์–ผ๋งˆ์ธ๊ฐ€์š”?",
        ai_msg="์˜ˆ์‚ฐ์€ 5์–ต์›์ž…๋‹ˆ๋‹ค.",
        query_type="document",
        sources=[{'content': '์˜ˆ์‚ฐ: 5์–ต์›', 'score': 0.95}],
        used_retrieval=True,
        search_mode="hybrid_rerank"
    )
    
    manager.add_message(
        user_msg="๊ณ ๋งˆ์›Œ์š”",
        ai_msg="์ฒœ๋งŒ์—์š”! ์–ธ์ œ๋“  ์งˆ๋ฌธํ•˜์„ธ์š”.",
        query_type="thanks"
    )
    
    # ํ†ต๊ณ„ ์ถœ๋ ฅ
    print("\n===== ํ†ต๊ณ„ =====")
    print(manager.get_statistics())
    
    # ํžˆ์Šคํ† ๋ฆฌ ์ถœ๋ ฅ
    print("\n===== DB ํžˆ์Šคํ† ๋ฆฌ =====")
    for msg in manager.get_db_history():
        print(f"{msg['type']}: {msg['user'][:20]}...")
    
    # JSON ๋‚ด๋ณด๋‚ด๊ธฐ
    print("\n===== JSON Export =====")
    print(manager.export_to_json())
    
    # Representation
    print("\n===== Manager Info =====")
    print(manager)